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Papessa [141]
3 years ago
5

Which of the following represents a geometric series (remember what a series is as opposed to a sequence)?

Mathematics
1 answer:
juin [17]3 years ago
8 0

Answer:

4 + 12 + 36 + ...

Step-by-step explanation:

4, 12, 36, ... is a geometric sequence, it has a common ratio of r=\frac{36}{12}=\frac{12}{4}=3

When we add the terms of a geometric sequence we get a geometric series.

4+12+36+ ... is a geometric series, it has a common ratio of r=\frac{36}{12}=\frac{12}{4}=3

4 + 12 + 20 + ... is not a geometric series because it has no common ratio

\frac{20}{12}\ne \frac{12}{4}

The second choice is correct

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suter [353]

When subtracting fractions, you need to make sure the denominators are the same. In 2/3 - 1/2, the denominators are different. To make them the same, find the least common denominator. In this case, the common denominator is 6

2/3 becomes 4/6

1/2 becomes 3/6

Now subtract the fractions with the common denominator

4/6 - 3/6 = 1/6

The answer is 1/6

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I believe it's B because we don't know how big the jar is and it's asking for. a statistical question.
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3 years ago
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By the age of 21, the best violinist and pianist will have practiced at least 10,000 hours. If you practice and instrument 45 mi
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Answer:

273.94 hours.

Step-by-step explanation:

1 day = 0.75 hours of practicing in a day.

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x =  273.94 hours

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3 years ago
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Answer:

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